Lines Matching full:video
3 * video.c - ACPI Video Driver
26 #include <acpi/video.h>
31 #define ACPI_VIDEO_BUS_NAME "Video Bus"
32 #define ACPI_VIDEO_DEVICE_NAME "Video Device"
37 ACPI_MODULE_NAME("video");
40 MODULE_DESCRIPTION("ACPI Video Driver");
47 * By default, we don't allow duplicate ACPI video bus devices
107 .name = "video",
118 u8 multihead:1; /* can switch video heads */
119 u8 rom:1; /* can retrieve a video rom */
130 u8 _VPO:1; /* Video POST Options */
207 struct acpi_video_bus *video; member
215 static void acpi_video_device_rebind(struct acpi_video_bus *video);
216 static void acpi_video_device_bind(struct acpi_video_bus *video,
218 static int acpi_video_device_enumerate(struct acpi_video_bus *video);
264 struct acpi_video_device *video = acpi_driver_data(device); in video_get_max_state() local
266 *state = video->brightness->count - ACPI_VIDEO_FIRST_LEVEL - 1; in video_get_max_state()
274 struct acpi_video_device *video = acpi_driver_data(device); in video_get_cur_state() local
278 if (acpi_video_device_lcd_get_level_current(video, &level, false)) in video_get_cur_state()
280 for (offset = ACPI_VIDEO_FIRST_LEVEL; offset < video->brightness->count; in video_get_cur_state()
282 if (level == video->brightness->levels[offset]) { in video_get_cur_state()
283 *state = video->brightness->count - offset - 1; in video_get_cur_state()
294 struct acpi_video_device *video = acpi_driver_data(device); in video_set_cur_state() local
297 if (state >= video->brightness->count - ACPI_VIDEO_FIRST_LEVEL) in video_set_cur_state()
300 state = video->brightness->count - state; in video_set_cur_state()
301 level = video->brightness->levels[state - 1]; in video_set_cur_state()
302 return acpi_video_device_lcd_set_level(video, level); in video_set_cur_state()
313 * Video Management
468 * Some machines have a broken acpi-video interface for brightness
515 * Some machines have multiple video output devices, but only the one
517 * register backlight interface for other video output devices.
532 * events, in this case acpi-video is considered the canonical source
635 * ACPI video backlight still works w/ buggy _BQC. in acpi_video_device_lcd_get_level_current()
690 * video : video bus device pointer
714 acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag) in acpi_video_bus_DOS() argument
718 if (!video->cap._DOS) in acpi_video_bus_DOS()
723 video->dos_setting = (lcd_flag << 2) | bios_flag; in acpi_video_bus_DOS()
724 status = acpi_execute_simple_method(video->device->handle, "_DOS", in acpi_video_bus_DOS()
932 * device : video output device (LCD, CRT, ..)
1006 * device : video output device (LCD, CRT, ..)
1036 * device : video output device (VGA)
1041 * Find out all required AML methods defined under the video bus device.
1044 static void acpi_video_bus_find_cap(struct acpi_video_bus *video) in acpi_video_bus_find_cap() argument
1046 if (acpi_has_method(video->device->handle, "_DOS")) in acpi_video_bus_find_cap()
1047 video->cap._DOS = 1; in acpi_video_bus_find_cap()
1048 if (acpi_has_method(video->device->handle, "_DOD")) in acpi_video_bus_find_cap()
1049 video->cap._DOD = 1; in acpi_video_bus_find_cap()
1050 if (acpi_has_method(video->device->handle, "_ROM")) in acpi_video_bus_find_cap()
1051 video->cap._ROM = 1; in acpi_video_bus_find_cap()
1052 if (acpi_has_method(video->device->handle, "_GPD")) in acpi_video_bus_find_cap()
1053 video->cap._GPD = 1; in acpi_video_bus_find_cap()
1054 if (acpi_has_method(video->device->handle, "_SPD")) in acpi_video_bus_find_cap()
1055 video->cap._SPD = 1; in acpi_video_bus_find_cap()
1056 if (acpi_has_method(video->device->handle, "_VPO")) in acpi_video_bus_find_cap()
1057 video->cap._VPO = 1; in acpi_video_bus_find_cap()
1061 * Check whether the video bus device has required AML method to
1065 static int acpi_video_bus_check(struct acpi_video_bus *video) in acpi_video_bus_check() argument
1070 if (!video) in acpi_video_bus_check()
1073 dev = acpi_get_pci_dev(video->device->handle); in acpi_video_bus_check()
1083 /* Does this device support video switching? */ in acpi_video_bus_check()
1084 if (video->cap._DOS || video->cap._DOD) { in acpi_video_bus_check()
1085 if (!video->cap._DOS) { in acpi_video_bus_check()
1088 acpi_device_bid(video->device)); in acpi_video_bus_check()
1090 video->flags.multihead = 1; in acpi_video_bus_check()
1094 /* Does this device support retrieving a video ROM? */ in acpi_video_bus_check()
1095 if (video->cap._ROM) { in acpi_video_bus_check()
1096 video->flags.rom = 1; in acpi_video_bus_check()
1100 /* Does this device support configuring which video device to POST? */ in acpi_video_bus_check()
1101 if (video->cap._GPD && video->cap._SPD && video->cap._VPO) { in acpi_video_bus_check()
1102 video->flags.post = 1; in acpi_video_bus_check()
1117 acpi_video_get_device_attr(struct acpi_video_bus *video, unsigned long device_id) in acpi_video_get_device_attr() argument
1122 for (i = 0; i < video->attached_count; i++) { in acpi_video_get_device_attr()
1123 ids = &video->attached_array[i]; in acpi_video_get_device_attr()
1132 acpi_video_get_device_type(struct acpi_video_bus *video, in acpi_video_get_device_type() argument
1138 for (i = 0; i < video->attached_count; i++) { in acpi_video_get_device_type()
1139 ids = &video->attached_array[i]; in acpi_video_get_device_type()
1149 struct acpi_video_bus *video) in acpi_video_bus_get_one_device() argument
1171 data->video = video; in acpi_video_bus_get_one_device()
1176 attribute = acpi_video_get_device_attr(video, device_id); in acpi_video_bus_get_one_device()
1200 device_type = acpi_video_get_device_type(video, device_id); in acpi_video_bus_get_one_device()
1217 acpi_video_device_bind(video, data); in acpi_video_bus_get_one_device()
1220 mutex_lock(&video->device_list_lock); in acpi_video_bus_get_one_device()
1221 list_add_tail(&data->entry, &video->video_device_list); in acpi_video_bus_get_one_device()
1222 mutex_unlock(&video->device_list_lock); in acpi_video_bus_get_one_device()
1229 * video : video bus device
1234 * Enumerate the video device list of the video bus,
1235 * bind the ids with the corresponding video devices
1236 * under the video bus.
1239 static void acpi_video_device_rebind(struct acpi_video_bus *video) in acpi_video_device_rebind() argument
1243 mutex_lock(&video->device_list_lock); in acpi_video_device_rebind()
1245 list_for_each_entry(dev, &video->video_device_list, entry) in acpi_video_device_rebind()
1246 acpi_video_device_bind(video, dev); in acpi_video_device_rebind()
1248 mutex_unlock(&video->device_list_lock); in acpi_video_device_rebind()
1253 * video : video bus device
1254 * device : video output device under the video
1260 * Bind the ids with the corresponding video devices
1261 * under the video bus.
1265 acpi_video_device_bind(struct acpi_video_bus *video, in acpi_video_device_bind() argument
1271 for (i = 0; i < video->attached_count; i++) { in acpi_video_device_bind()
1272 ids = &video->attached_array[i]; in acpi_video_device_bind()
1282 struct acpi_video_bus *video = device->video; in acpi_video_device_in_dod() local
1290 if (!video->attached_count || video->child_count > 8) in acpi_video_device_in_dod()
1293 for (i = 0; i < video->attached_count; i++) { in acpi_video_device_in_dod()
1294 if ((video->attached_array[i].value.int_val & 0xfff) == in acpi_video_device_in_dod()
1304 * video : video bus device
1313 static int acpi_video_device_enumerate(struct acpi_video_bus *video) in acpi_video_device_enumerate() argument
1323 if (!video->cap._DOD) in acpi_video_device_enumerate()
1326 status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer); in acpi_video_device_enumerate()
1339 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n", in acpi_video_device_enumerate()
1367 kfree(video->attached_array); in acpi_video_device_enumerate()
1369 video->attached_array = active_list; in acpi_video_device_enumerate()
1370 video->attached_count = count; in acpi_video_device_enumerate()
1460 struct acpi_video_bus *video; in acpi_video_get_edid() local
1469 video = acpi_driver_data(device); in acpi_video_get_edid()
1471 for (i = 0; i < video->attached_count; i++) { in acpi_video_get_edid()
1472 video_device = video->attached_array[i].bind_info; in acpi_video_get_edid()
1526 acpi_video_bus_get_devices(struct acpi_video_bus *video, in acpi_video_bus_get_devices() argument
1533 * There are systems where video module known to work fine regardless in acpi_video_bus_get_devices()
1537 acpi_video_device_enumerate(video); in acpi_video_bus_get_devices()
1541 status = acpi_video_bus_get_one_device(dev, video); in acpi_video_bus_get_devices()
1546 video->child_count++; in acpi_video_bus_get_devices()
1557 static int acpi_video_bus_start_devices(struct acpi_video_bus *video) in acpi_video_bus_start_devices() argument
1559 return acpi_video_bus_DOS(video, 0, in acpi_video_bus_start_devices()
1563 static int acpi_video_bus_stop_devices(struct acpi_video_bus *video) in acpi_video_bus_stop_devices() argument
1565 return acpi_video_bus_DOS(video, 0, in acpi_video_bus_stop_devices()
1571 struct acpi_video_bus *video = acpi_driver_data(device); in acpi_video_bus_notify() local
1575 if (!video || !video->input) in acpi_video_bus_notify()
1578 input = video->input; in acpi_video_bus_notify()
1586 case ACPI_VIDEO_NOTIFY_PROBE: /* User plugged in or removed a video in acpi_video_bus_notify()
1588 acpi_video_device_enumerate(video); in acpi_video_bus_notify()
1589 acpi_video_device_rebind(video); in acpi_video_bus_notify()
1645 bus = video_device->video; in acpi_video_device_notify()
1698 struct acpi_video_bus *video; in acpi_video_resume() local
1709 video = container_of(nb, struct acpi_video_bus, pm_nb); in acpi_video_resume()
1711 dev_info(&video->device->dev, "Restoring backlight state\n"); in acpi_video_resume()
1713 for (i = 0; i < video->attached_count; i++) { in acpi_video_resume()
1714 video_device = video->attached_array[i].bind_info; in acpi_video_resume()
1802 * register video output if cooling device registration failed? in acpi_video_dev_register_backlight()
1822 static void acpi_video_run_bcl_for_osi(struct acpi_video_bus *video) in acpi_video_run_bcl_for_osi() argument
1827 mutex_lock(&video->device_list_lock); in acpi_video_run_bcl_for_osi()
1828 list_for_each_entry(dev, &video->video_device_list, entry) { in acpi_video_run_bcl_for_osi()
1832 mutex_unlock(&video->device_list_lock); in acpi_video_run_bcl_for_osi()
1838 * Do not create backlight device for video output in acpi_video_should_register_backlight()
1851 static int acpi_video_bus_register_backlight(struct acpi_video_bus *video) in acpi_video_bus_register_backlight() argument
1855 if (video->backlight_registered) in acpi_video_bus_register_backlight()
1858 acpi_video_run_bcl_for_osi(video); in acpi_video_bus_register_backlight()
1863 mutex_lock(&video->device_list_lock); in acpi_video_bus_register_backlight()
1864 list_for_each_entry(dev, &video->video_device_list, entry) { in acpi_video_bus_register_backlight()
1868 mutex_unlock(&video->device_list_lock); in acpi_video_bus_register_backlight()
1870 video->backlight_registered = true; in acpi_video_bus_register_backlight()
1872 video->pm_nb.notifier_call = acpi_video_resume; in acpi_video_bus_register_backlight()
1873 video->pm_nb.priority = 0; in acpi_video_bus_register_backlight()
1874 return register_pm_notifier(&video->pm_nb); in acpi_video_bus_register_backlight()
1896 static int acpi_video_bus_unregister_backlight(struct acpi_video_bus *video) in acpi_video_bus_unregister_backlight() argument
1901 if (!video->backlight_registered) in acpi_video_bus_unregister_backlight()
1904 error = unregister_pm_notifier(&video->pm_nb); in acpi_video_bus_unregister_backlight()
1906 mutex_lock(&video->device_list_lock); in acpi_video_bus_unregister_backlight()
1907 list_for_each_entry(dev, &video->video_device_list, entry) in acpi_video_bus_unregister_backlight()
1909 mutex_unlock(&video->device_list_lock); in acpi_video_bus_unregister_backlight()
1911 video->backlight_registered = false; in acpi_video_bus_unregister_backlight()
1929 static int acpi_video_bus_add_notify_handler(struct acpi_video_bus *video) in acpi_video_bus_add_notify_handler() argument
1935 video->input = input = input_allocate_device(); in acpi_video_bus_add_notify_handler()
1941 error = acpi_video_bus_start_devices(video); in acpi_video_bus_add_notify_handler()
1945 snprintf(video->phys, sizeof(video->phys), in acpi_video_bus_add_notify_handler()
1946 "%s/video/input0", acpi_device_hid(video->device)); in acpi_video_bus_add_notify_handler()
1948 input->name = acpi_device_name(video->device); in acpi_video_bus_add_notify_handler()
1949 input->phys = video->phys; in acpi_video_bus_add_notify_handler()
1952 input->dev.parent = &video->device->dev; in acpi_video_bus_add_notify_handler()
1967 mutex_lock(&video->device_list_lock); in acpi_video_bus_add_notify_handler()
1968 list_for_each_entry(dev, &video->video_device_list, entry) in acpi_video_bus_add_notify_handler()
1970 mutex_unlock(&video->device_list_lock); in acpi_video_bus_add_notify_handler()
1975 acpi_video_bus_stop_devices(video); in acpi_video_bus_add_notify_handler()
1978 video->input = NULL; in acpi_video_bus_add_notify_handler()
1992 static void acpi_video_bus_remove_notify_handler(struct acpi_video_bus *video) in acpi_video_bus_remove_notify_handler() argument
1996 mutex_lock(&video->device_list_lock); in acpi_video_bus_remove_notify_handler()
1997 list_for_each_entry(dev, &video->video_device_list, entry) in acpi_video_bus_remove_notify_handler()
1999 mutex_unlock(&video->device_list_lock); in acpi_video_bus_remove_notify_handler()
2001 acpi_video_bus_stop_devices(video); in acpi_video_bus_remove_notify_handler()
2002 input_unregister_device(video->input); in acpi_video_bus_remove_notify_handler()
2003 video->input = NULL; in acpi_video_bus_remove_notify_handler()
2006 static int acpi_video_bus_put_devices(struct acpi_video_bus *video) in acpi_video_bus_put_devices() argument
2010 mutex_lock(&video->device_list_lock); in acpi_video_bus_put_devices()
2011 list_for_each_entry_safe(dev, next, &video->video_device_list, entry) { in acpi_video_bus_put_devices()
2015 mutex_unlock(&video->device_list_lock); in acpi_video_bus_put_devices()
2024 struct acpi_video_bus *video; in acpi_video_bus_add() local
2034 "Duplicate ACPI video bus devices for the" in acpi_video_bus_add()
2036 "parameter \"video.allow_duplicates=1\"" in acpi_video_bus_add()
2042 video = kzalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); in acpi_video_bus_add()
2043 if (!video) in acpi_video_bus_add()
2059 video->device = device; in acpi_video_bus_add()
2062 device->driver_data = video; in acpi_video_bus_add()
2064 acpi_video_bus_find_cap(video); in acpi_video_bus_add()
2065 error = acpi_video_bus_check(video); in acpi_video_bus_add()
2069 mutex_init(&video->device_list_lock); in acpi_video_bus_add()
2070 INIT_LIST_HEAD(&video->video_device_list); in acpi_video_bus_add()
2072 error = acpi_video_bus_get_devices(video, device); in acpi_video_bus_add()
2078 video->flags.multihead ? "yes" : "no", in acpi_video_bus_add()
2079 video->flags.rom ? "yes" : "no", in acpi_video_bus_add()
2080 video->flags.post ? "yes" : "no"); in acpi_video_bus_add()
2082 list_add_tail(&video->entry, &video_bus_head); in acpi_video_bus_add()
2085 acpi_video_bus_register_backlight(video); in acpi_video_bus_add()
2086 acpi_video_bus_add_notify_handler(video); in acpi_video_bus_add()
2091 acpi_video_bus_put_devices(video); in acpi_video_bus_add()
2092 kfree(video->attached_array); in acpi_video_bus_add()
2094 kfree(video); in acpi_video_bus_add()
2102 struct acpi_video_bus *video = NULL; in acpi_video_bus_remove() local
2108 video = acpi_driver_data(device); in acpi_video_bus_remove()
2110 acpi_video_bus_remove_notify_handler(video); in acpi_video_bus_remove()
2111 acpi_video_bus_unregister_backlight(video); in acpi_video_bus_remove()
2112 acpi_video_bus_put_devices(video); in acpi_video_bus_remove()
2115 list_del(&video->entry); in acpi_video_bus_remove()
2118 kfree(video->attached_array); in acpi_video_bus_remove()
2119 kfree(video); in acpi_video_bus_remove()
2240 struct acpi_video_bus *video; in acpi_video_unregister_backlight() local
2245 list_for_each_entry(video, &video_bus_head, entry) in acpi_video_unregister_backlight()
2246 acpi_video_bus_unregister_backlight(video); in acpi_video_unregister_backlight()
2267 * the video opregion code to be run first in order to initialise
2268 * state before any ACPI video calls are made. To handle this we defer
2269 * registration of the video class until the opregion code has run.